UPDMRTF — odd reference to UPDM RFC

The “UPDM RFC” suddenly appears without a definition or a reference. It seems that this RFC is meaningless. This sentence is informative. It is obvious matter to follow the RFC.

Remove the description which mentions the “RFC”. Or if the RFC is inevitable, it is necessary to reference to RFC or remove the RFC.

Delete RFC from the paragraph
This International Standard reuses a subset of UML 2 and provides additional extensions needed to address the requirements of developing UPDM. We have used those requirements as the basis for this International Standard.